/Engine/Source/Runtime/Experimental/Chaos/Public/GeometryCollection/Facades/CollectionTransformSelectionFacade.h
Convert a VertexSelection to a FaceSelection, if bAllElementsMustBeSelected is true then all vertices of a face must be selectod for the face to be selected
[TArray](API\Runtime\Core\Containers\TArray)< int32 > ConvertVertexSelectionToFaceSelection ( const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & InVertexSelection, bool bAllElementsMustBeSelected ) const